Finding the Fourth Proportional to 259,989.75, 389,935.31 and 126,735.99
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Solution
The fourth proportional to 259,989.75, 389,935.31 and 126,735.99 is: 190,079.94
Step by Step Solution
- Step 1: Write the proportion equation
259,989.75 : 389,935.31 = 126,735.99 : x - Step 2: Convert to fraction form
259,989.75/389,935.31 = 126,735.99/x - Step 3: Cross multiply
259,989.75x = 389,935.31 × 126,735.99 - Step 4: Simplify right side
259,989.75x = 49,418,836,915.13 - Step 5: Solve for x
x = 49,418,836,915.13/259,989.75 - Step 6: Final answer
x = 190,079.94
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.